21148215

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{1913}}^1$

素因数の和:1999

約数の個数: 32

約数和(自身を含む): 37483776

約数和(自身を除く): 16335561

約数列:

[1, 3, 5, 11, 15, 33, 55, 67, 165, 201, 335, 737, 1005, 1913, 2211, 3685, 5739, 9565, 11055, 21043, 28695, 63129, 105215, 128171, 315645, 384513, 640855, 1409881, 1922565, 4229643, 7049405, 21148215]

約数ペア:

[(1, 21148215), (3, 7049405), (5, 4229643), (11, 1922565), (15, 1409881), (33, 640855), (55, 384513), (67, 315645), (165, 128171), (201, 105215), (335, 63129), (737, 28695), (1005, 21043), (1913, 11055), (2211, 9565), (3685, 5739)]